Improvement in ore-pulverizers



UNITED STATES PATENT OFFICE.

IRA M. PHELPS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF HISRIGHT TO JOHN SHILLI'IO, JR, OF CINCINNATI, OHIO.

IMPROVEMENT IN ORE-PULVERIZERS.

Specification forming part of Letters Patent No. 215,967, dated May 27,1879; applicationfilcd April 3, 1879.

To all whom it may concern:

Be it known that '1, IRA M. PHELPS, of the city and county ofPhiladelphia, and State of Pennsylvania, have invented a new and usefulImprovement in Pulverizers, which improvement is fully set forth in thefollowing specification and accompanying drawings, in which- Figure 1 isa side elevation of the pulverizer embodying my invention. Fig. 2 is alongitudinal vertical section thereof in line at m, Fig. 3. Fig. 3 is ahorizontal section of a portion in line y y, Fig. 2.

Similar letters of reference indicate corresponding parts in the severalfigures.

My invention relates to that class of machines employed for pulverizingquartz and other gold and silver bearing ores preparatory to roasting oramalgamating; and consists of a stationary segment having its facecurved from above downward, thereby presenting a constantly-increasingdegree of inclination from the point of inlet to the discharge, and arocker-segment having its face curved similar to that of the fixedsegment, whereby, by" the repeated pressure of the rocker-segment on thestationary segment, the ore is pulverized as it runs down the stationarysegment by its own gravity.

Referring to the drawings, A represents a stationary segment, whichis'firmly supported in an inclined direction, and its face is curvedfrom above downward.

B represents a rocker, havingits face curved similar to that of thebed-plate, as clearly shown in Fig. 2.

To the support of the segment A are pivoted rods 0, whose other ends arepivoted to a head or projection, D, at the back of the rocker B, wherebythe rocker is bound to the segment.

In order to regulate the degree of pressure of the rocker upon thebed-plate, each connecting-rod G is made in two parts, connected by athreaded link or swivel, a.

E E represent side plates, which are securely bolted to the fixedsegment on each side, and extend sufficiently above its face to inclosethe rocker 13 during its entire sweep.

F F represent toothed segments, which are firmly bolted to the sides ofthe rocker B and segment A, respectively, and, meshing into each other,prevent any displacement of the rocker.

G represents a pedestal, which is bolted to the bed-plate G, andsupports the shaft H of the band-wheels J, which are furnished withcrank-pins b and connecting-rods K, by means of which motion is impartedto the rocker.

In operating this pulverizer the material should be well dried, andreduced to the condition of coarse sand or fine gravel, and evenlydistributed over the feed-apron L, so as to cover the entire face of thefixed segment A and flow in an even and uniform stream down the curvedincline. During its descent it is pressed upon several times by therocker, and thus reduced to any, degree of fineness required.

Ordinary sand runs freely down on an inclination of forty degrees, andthe finer the powder the steeper must be the incline. To accommodate themachine to this law, it will be noticed that the degree of inclinationof the fixed segment constantly increases from inlet to discharge, sothat, as the ore becomes finer and finer after each passage of therocker over it, it has a steeper and steeper inclined plane to run down.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- In a quartz or ore pulverizer, astationary inclined segment whose face is curved from above downward,and presents a graduallyincreasing degree of inclination from top tobottom, and a rocker-segment having its face curved similar to that ofthe stationary segment, combined and operating substantially asdescribed, whereby, by the repeated pressure of the rocker on thestationary segment, the ore is pulverized as it runs down the stationarysegment by its own gravity, as stated.

IRA M. PHELPS.

Witnesses JOHN A. WTEDERsHEIM, SAML. M. GnIoE.

